Writing S-Functions in C (Writing S-Functions)

Writing S-Functions

Compiling C S-Functions

S-functions can be compiled in one of three modes identified by the presence of one of the following defines:

MATLAB_MEX_FILE -- Indicates that the S-function is being built as a MEX-file for use with Simulink.

RT -- Indicates that the S-function is being built with the Real-Time Workshop generated code for a real-time application using a fixed-step solver.

NRT -- Indicates that the S-function is being built with the Real-Time Workshop generated code for a nonreal-time application using a variable-step solver.

The SimStruct How Simulink Interacts with C S-Functions